The functional significance of the hypocercal tail and lateral fin fold of Anaspid ostracoderms by Hopson, James A Publication date 1974 Topics Anaspida, Fins (Anatomy), Fishes -- Locomotion Publisher ...

The University of Chicago Press publishes more than 90 scholarly journals that cover a wide range of disciplines, from the humanities and the social sciences to the life and physical sciences. In ...

The Landisburg Tongue is an arenaceous unit, approximately fifteen feet thick, which is exposed within Perry County, Pennsylvania. It wedges out among Upper Silurian marine shales in a westward ...

Object Details Author Joysey, Kenneth Alan Kemp, T. S (Thomas Stainforth) Parrington, F. R (Francis Rex) Whiting, Henry Philip 1912- Contents Cranial anatomy of the ostracoderms in relation to the ...

Interestingly, this echoes the opinion expressed long ago by some paleontologists (13), who supported the theory that lampreys and hagfishes were derived from heavily armored and ossified Paleozoic ...

A New Cephalaspid Fish T. S. WESTOLL has described “A New Cephalaspid Fish from the Downtonian of Scotland, with Notes on the Structure and Classification of Ostracoderms” (Trans. Roy. Soc ...